perri.anthony wrote:
>
> I searched this group for any reference to implementing Plated-Thru
> Holes using Permatex but didn't see any references to it. Permatex has
> a product designed for fixing rear window defogger trace breaks and
> James Mitchell has created a procedure to plate holes with it. I am
> wondering if anyone in this group has used this technique?
Is used as conductive ink. With the same process again. A similar thing
was referred here before linking to this site (slow/down now):
http://www.colinmackenzie.net/index.php?option=com_content&view=article&id=25 Using the PTH acronym here the 'P' will stand for painted and not
plated :> And if you plate copper above the conductive deposit, the
overall process gives more work and cost than real PTH process. And you
cannot solder in the 'painted' holes!
I understand many people see a good answer in this methods, they are
similar to already known procedures, but doesn't mean they are the best,
faster, easier or cheapest . Carbon processes use a micro etch step and
got my dislike. Covering the pcb with a plastic sheet, drilling, squeeze
ink, vacuum and oven cure is nothing fast or easy. Conductive polymer is
a easy understanding procedure, but requires much replenishment, due to
volatile compounds or short life. Palladium based chemistries are long
lasting, really easy and fast to use, super efective system, and they
are cheaper per hole than conductive ink procedures.
Weeks ago was referred here a copper plated solder wire. And only later
i got this doubt: is it used in small pieces punched inside the holes or
is soldered through the hole and the plated copper holds solder in the
hole walls? That will make a very affordable system.